TypeScript - calculate cos in degrees

In this article, we would like to show you a simple example of how to calculate cos in degrees in TypeScript.

In order to use this example we just need to change the value of deg variable to some other value (in degrees).

const calculateCos = (deg: number): number => {
  const rad = (Math.PI / 180) * deg;

  return Math.cos(rad);
};


// Usage example:

const deg: number = 30;
const y: number = calculateCos(deg);

console.log('cos(' + deg + ' deg) = ' + y);

Output:

cos(30 deg) = 0.8660254037844387

We can change deg to other values.

Example of common calculations:

cos(0 deg) = 1
cos(30 deg) = 0.8660254037844387
cos(45 deg) = 0.7071067811865476
cos(60 deg) = 0.5000000000000001
cos(90 deg) = 6.123233995736766e-17